Pipe-cutter



(No Model.) r JEREMIAH J. MCCARTHY 8: JOHN J. MGCART'HY.

' PIPE CUTTER. I

No. 531,549. I Patented Dec. 25, 1894.

j UNITED STATES- PATENT.

JEREMIAH J. MCCARTHY AND JOHN J. MCCARTHY, on PHILADELPHIA,

. PENNSYLVANIA.

PIPE-CUTTER."

SPECIFIGATTON forming part of Letters Patent No. 531,549, dated December25, 1894.

' Application filed April 9 1894- Serial No. 506,872- (No model.)

To all whom it may concern.-

Be it known that we, JEREMIAH J. MCCAR- THY and J OHN J. MCCARTHY,citizensof the United States of America, residing at Philadelphia, inthe county of Philadelphia and State of Pennsylvania, have inventedcertain new and useful Improvements in Pipe-Outters, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

This invention relates to pipe-cutters for severing soil and other pipesin required lengths and at desired points.

To cut pipes which are cast it is necessary that the metal be removed atthe line of separation. Wrought and drawn pipes often have the metalpushed from the line of severance by a wedging action of the cutter.Cutters of this character will not operate with cast metal pipes whichare of a crystalline and fragile nature and require the removal of themetal to produce the cut.

The primary object of the invention is the provision of a hand tool forthe desired purpose which will be portable, light, eflicient and easilymanipulated and which will not unnecessarily burden the mechanic incarrying the same from place to place.

The improvement consists ofthe novel features which hereinafter will bemore fully described and claimedand which are shown in the annexeddrawings, in which- Figure 1, is a side elevation of a tool constructedin accordance with and embodying the essence of the invention. Fig. 2,isa top plan View of the jaw carrying the cutter. Fig.

3, is a cross section of the jaw on the line w--a: of Fig. 2. Fig. 4, isan end view of the jaw shown in Fig. 3. Fig. 5, is a perspective view ofthe cutter. Fig. 6, is a side elevation of the cutter.

To illustrate the invention a pair of tongs of usual and well knownconstruction is shown, comprising the levers 2 and 3 connected togetherby an adjustable pivot E to adapt the device to pipes of differentsizes, the pivot E being adjustable in a slote of the head 4, by a setscrew D. Anti-friction rollers G are placed in the head 4 to receive thethrust of the pipe G and relieve friction in the operation of the tool.The jaw F of the movable lever 3 is provided with a slot 6 which flaresfrom the top to the inner face. The walls of the slot are enlarged attheir inner ends as at 7, to provide recesses to receive lateralprojections 8 at the inner end of the cutter 9 to retain the latter inplace against longitudinal displacement. The walls of the recesses 7 arepreferably parallel so that the retaining projections 8 may slide intoplace and permit the cutter 9 to seat itself in the slot 6.

The cutter 9 is of best steel, finely tempered and its sides taper inopposite directions from a line yy. The upper portion of the cuttersnugly fits the slot 6 and the lower portion has its sides tapering to acutting edge. The front end of the cutter inclines forward to thecutting point 10. The lower edge inclines from the point 10 to the rearend of the cutter to give clearness for the tool. The cutter'is slippedinto place in the slot 6 from the inner face of the jaw F.

By having the cutter made removable it can be easily-detached andsharpened and replaced by other cutters having difierently shapedpoints, and the body of the tool can be made of cheaper material.

As shown the device is designed to be used by moving the free ends ofthe levers in the direction indicated by the arrow. Obviously, the toolcan be used by moving it in a reverse direction by inclining thecutting. edge of the cutter from the rear to the front so that thecutting point will be at the rear end of the cutter instead of at thefront end as now shown.

In order that the tool may operate successfully it is necessary thatsome means be provided to positively draw the free ends of the loverstogether and hold them in the adjusted office may be provided. As showntwo rods 11 and 12 are attached at their outer ends to the cut thelevers are drawn together to cause the cutter to take a deeper bite.This operation is repeated until the pipe is severed.

\Ve claim- 5 1. A tool for cutting soil or other pipe comprising a headto receive and retain the pipe in place, a relatively movable jaw havinga slot which flares from the outer to the inner face, and having lateralrecesses, and a cut- 10 ter removably attached to the jaw having lateralprojections which enter the said recesses substantially as described.

2. The herein specified tool for cutting soil and other pipes comprisingtwo levers adj ust- I 5 ably connected together by a movable pivot,

one lever having its jaw provided with aslot which flares from the enterto the inner face, and with lateral recesses, a cutter removablyattached to the slotted jaw, having lateral projections which enter thesaid recesses and means for positively drawing the free ends of thelevers together and holding them in the adjusted position, substantiallyas set forth. In testimony whereof we alfix our signatures in presenceof two witnesses.

JEREMIAH J. MCCARTHY. JOHN J. MCCARTHY. Witnesses:

D. S. LINDSAY, DAVID H. MAGEE.

